Bitcoin

op return – When was the first OP_RETURN output from Coinbase?

One way to solve the problem BIP34 does not mean BIP30. Also known as the Block 1,983,702 issue, this is a soft fork that mandates the SegWit promise. (0)

does not exist OP_RETURN Printed for all Coinbase transactions before BIP34 was enabled (unless my script is wrong (1)). OP_RETURN Output starting with SegWit magic byte 0x6a24aa21a9ed.

Recently OP_RETURN The output of a Coinbase transaction is very common and is used in sidechain(ish) protocols as well as SegWit promises.

When did this first happen?

(0) https://twitter.com/kcalvinalvinn/status/1733008287887659266

(1) https://gist.github.com/Sjors/018f764b28efdf29fda60e47f19615a5

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